package yongyou.d20211101.t1;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.StreamTokenizer;

/**
 * @author habitplus
 * @since 2021-11-01 18:00
 */
public class Main {
    static final StreamTokenizer st =
            new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));

    static int nextInt() {
        try {
            st.nextToken();
        } catch (IOException e) {
            throw new RuntimeException("Input is invalid!");
        }
        return (int) st.nval;
    }

    public static void main(String[] args) {
        int n = nextInt();
        int k = nextInt();

    }

    public String encrypt(String str) {
        if (str == null || str.length() == 0) return "";

        char[] chs = str.toCharArray();
        int n = chs.length;
        StringBuilder sb = new StringBuilder();
        char c;
        for (int i = n - 1; i >= 0; i--) {
            c = chs[i];
            if (chs[i] >= 'A' && chs[i] <= 'Z') {
                c = chs[i] == 'A' ? 'z' : (char)(chs[i] + 32 - 1);
            } else if (chs[i] >= 'a' && chs[i] <= 'z') {
                c = chs[i] == 'z' ? 'A' : (char)(chs[i] - 32 + 1);
            }

            sb.append(c);
        }
        return sb.toString();
    }


}
